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학술지 A 6-18-GHz GaAs Multifunction Chip With 8-bit True Time Delay and 7-bit Amplitude Control
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저자
정진철, 염인복, 김재덕, 이왕용, 이창훈
발행일
201805
출처
IEEE Transactions on Microwave Theory and Techniques, v.66 no.5, pp.2220-2230
ISSN
0018-9480
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TMTT.2017.2786698
협약과제
17JR1200, MMIC 기반 X-band GaN SSPA 상세설계 및 인증, 염인복
초록
This paper presents a monolithic microwave integrated circuit multifunction chip implemented using a 0.25-μ m gallium arsenide pseudomorphic high-electron-mobility transistor process for use in a phased array jammer transmitter. This chip, which operates in the frequency range of 6-18 GHz, provides several functions including 8-bit true time delay (TTD), 7-bit attenuation, wideband amplification, and digital serial-to-parallel conversion for 15-bit control. The TTD and attenuation coverage are 255 ps with a step of 1 ps and 31.75 dB with a step of 0.25 dB, respectively. The TTD employing an artificial transmission line configuration demonstrates a root-mean-square delay error of less than 1.7 ps in the operating frequency range. The chip has a compact size of 4, m × 5 mm and exhibits a typical gain of 12 dB and an output P1dB of 16.5 dBm over a frequency range of 6-18 GHz.
KSP 제안 키워드
18 GHz, Amplitude control, Compact size, Delay error, Gallium Arsenide(GaAs), High electron mobility transistor(HEMT), Microwave monolithic integrated circuits(MMIC), Root mean square(RMS), Serial-to-parallel conversion, artificial transmission line, microwave integrated circuit